YOU SAID:

my dad went to get milk and never came back, I think that he might have gotten expired milk and been eaten by a milk monster.

INTO JAPANESE

パパが牛乳を取りに行って戻ってこなかったので、期限切れの牛乳をもらって、牛乳怪獣に食べられたのかもしれないと思います。

BACK INTO ENGLISH

My dad went to get the milk and didn't come back, so I think he got the expired milk and maybe the milk monster ate it.

INTO JAPANESE

父は牛乳を取りに行ったが戻ってこなかったので、期限切れの牛乳を取ってきたと思います。おそらく牛乳の怪物がそれを食べたのでしょう。

BACK INTO ENGLISH

My father went to get the milk, but he didn't come back, so I think he got the expired milk. Perhaps the milk monster ate it.

INTO JAPANESE

父は牛乳を取りに行ったが戻ってこなかったので、期限切れの牛乳をもらったと思う。おそらく牛乳怪獣が食べたのかもしれない。

BACK INTO ENGLISH

My father went to get the milk, but he didn't come back, so I think he got the expired milk. Maybe the milk monster ate it.

INTO JAPANESE

父は牛乳を取りに行ったが戻ってこなかったので、期限切れの牛乳をもらったと思う。おそらく牛乳怪獣が食べたのかもしれない。

BACK INTO ENGLISH

My father went to get the milk, but he didn't come back, so I think he got the expired milk. Maybe the milk monster ate it.